diff options
| author | Jiri Olsa <[email protected]> | 2022-08-31 14:40:41 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2022-08-31 13:23:44 -0300 |
| commit | 35503ce12a2c3d5d9a94e3cd85a06739b0120f79 (patch) | |
| tree | 41ba48b5551bbbf71ddc59be517c93d6d24142d6 | |
| parent | 3f5df3ac646e21a79a421ae4037c4ef0632bcaa9 (diff) | |
perf script: Skip dummy event attr check
Hongtao Yu reported problem when displaying uregs in perf script
for system wide perf.data:
# perf script -F uregs | head -10
Samples for 'dummy:HG' event do not have UREGS attribute set. Cannot print 'uregs' field.
The problem is the extra dummy event added for system wide,
which does not have proper sample_type setup.
Skipping attr check completely for dummy event as suggested
by Namhyung, because it does not have any samples anyway.
Reported-by: Hongtao Yu <[email protected]>
Suggested-by: Namhyung Kim <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/builtin-script.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 13580a9c50b8..304d234d8e84 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -566,6 +566,8 @@ static struct evsel *find_first_output_type(struct evlist *evlist, struct evsel *evsel; evlist__for_each_entry(evlist, evsel) { + if (evsel__is_dummy_event(evsel)) + continue; if (output_type(evsel->core.attr.type) == (int)type) return evsel; } |